You should quickly see the specialist so that they can find the source of the problem. My ex-colleague's daughter failed her hearing test THRICE. But they found the source of the problem, operated on her & she's now a healthy 7yo with no hearing problems at all.
Focus on what you can do for your child & not on what problem your child has. Children can feel it & you won't want your child to grow up feeling inferior just because of your reactions.